Carding-machine.



No. 797,749. PATENTED AUG. 22, 1905. R. B. ROBINSON & E. V. BATES.

HARDING MACHINE.

APILIGATION FILED MAY :1. was.

Ewumtow ATENT OFFICE.

ROBERT B. ROBINSON AND EDDO V. BATES, OF LOVWELL, MASSACHUSETTS.

CMRDENG IMAGMIINIE.

Specification of Letters Patent.

' Patented Aug. 22, 1905.

Application filed May 8, 1905. Serial No. 259,485.

To all who-1n it may (JOII/(JIZI'IL:

Be it known that we, Rosana. B. ROBINSON and EnDo V. BA'rns, of Lowell, in the county of M iddlesex and State of Massachusetts, have invented certain new and useful Improvements in Uarding-Wiachines, of which the following is a specification. A

This invention relates to machines for carding or straightening the fibers of wool, cotton, or other stock. Its objects are to provide means whereby the stock may be reworked several times by the same workers, thereby requiring fewer workers and econoniizing space or may be more thoroughly carded by the use of the same number of workers as heretofore.

By our invention two cards are enabled to do the work of three.

In the drawings, Figure 1 shows a side view of a card with the belts and supports for the rolls removed to show more clearly our arrangement of workers, strippers, transferrolls, and main cylinder. Fig. 2 shows a pair of workers with the course of the stock indicated as it passes between and around the different rolls. The stock is not drawn to scale.

In the drawings, B is the main cylinder, G the fancy, and H is the do'ffer. Stock is taken in at the left of the machine, Fig. 1, by feeding-in rolls intermediate and licker-in in the usual Way, and it is carried forward by the swift or main cylinder B, which travels at a very high rate of speed, and after being carded it passes the workers G l) itis delivered by the fancy C and doffer H also in the usual way. We arrange our workers in pairs G D, GD. Four pairs are shown in the drawings. We may use a greater or smaller number of pairs, if desired, however. The teeth on the workers of each pair are in carding proximity with each other and with the main cylinder, as shown.

F F are strippers, and E E are transfer-rolls cooperating, respectively, with each pair of workers. As each pair of workers operates in substantially the same manner, we will describe only one pair, shown in Fig. 2. A stripper F at the rear of the first worker is provided for each pair of workers, and this stripper takes the stock from the first worker G- and replaces it upon the main cylinder.

We are aware that transfer-rolls or strippers located above and between the workers have been used in connection with workers arranged in pairs for the purpose of carrying the stock from the second worker back to the first I cylinder.

worker. By this transfer process the stock is intended to be reworked by and between the workers and between the workers and the main cylinder, or between the workers and the main cylinder alone. We find, however, that in machines where such reworking devices have been tried the stock accumulates in the space between the workers and the main cylinder. In this space is formed a roll of stock, and this surplus stock interferes with even carding and causes bunches in the roving, which makes the yarn lumpy. Our invention is intended to prevent the formation of this roll or accumulation of stock. To this end instead of a transfer-roll above and between the two workers we use a small stripper or transferroll E between the two workers and the main This transfer-roll should be in carding proximity with both workers and may be in carding proximity with the main cylinder; but we prefer to have it set a short distance away from the main cylinder, as shown in Fig. 2. The second worker D turns at a surface speed much lessthan that of the main cylinder. The transfer-roll E turns at a surface speed enough greater than worker 1) to lift the stock and carry it over to worker G. First worker Gr turns at a considerably greater surface speed than the second worker D or transfer-roll E. Stripper F turns at a greater surface speed than first worker G, and the main cylinder B turns at a greater surface speed than stripper F. The first worker G- turns in the same direction with the main cylinder, while the second worker D, stripper F, and transfer-roll E turn in the opposite direction.

Instead of using for a transfer-roll a roll covered with the usual form of card-clothing we may use a metallic-toothed roll.

Any suitable arrangement of belts or gears may be used in our machine for driving the workers, strippers, and transfer-rolls at the required speeds.

in our machine the stock is carried forward by the main cylinder B, and the first carding takes place between the main cylinder B and the first worker (i. Some of the stock a is carried back by first worker G and is stripped therefrom by the stripper F and is returned to the main cylinder, as shown. The rest of the stock carried forward and is again carded between the second worker D and the main cylinder B. The carding at this point between the second worker l) and the main cylinder B is the more effective from the fact that the teeth of the second worker D have been cleared by the transfer-roll E before they reach the point of carding proximity with the main cylinder B. Part of this stock is carried along by the main cylinder to the next pair of workers, and part of the stock is forced into the teeth of the second worker D, which have been cleared by transfer-roll E and are ready to receive the stock. This stock 8 is carried around the second worker D until it reaches the point of carding contact with the first worker G. As the teeth of the first worker G have been cleared by stripper F, they are in the best condition to card the stock at the point of contact and form the thin sheet of fiber 0. The stock 12 not carded by the first worker G at the point of contact is taken off the second worker by the transfer-roll E and forced and pulled in to the first worker G. In practice, when the sheet of fiber is started from the second worker D by the transfer-roll E and is caught by the teeth of the first worker Gr, by reason of the greater speed of the latter and the arrangement of teeth on the two workers the sheet of fiber straightens out, as shown at p, and scarcely touches the transfer-roll E. Transfer-roll E, however, picks up any flying or loose stock, as at r, and forces it, with 0 and so firmly into the teeth of the first worker G that there are practically no flyings or loose fibers on the points of the teeth of the first Worker to be Whipped ofi' by the main cylinder and rolled up, thereby making the roving uneven, as is the case in other reworking cards. The space between the first worker, the transfer-roll, and the main cylinder is so small with relation to the length of the staple of the stock that there is no room for loose stock to accumulate. Besides this the cooperating air-currents created by the transfer-roll and the main cylinder tend to suck in any loose fibers between the transfer-roll and the main cylinder and force them onto the main cylinder. The

distance between the tangential point of the first and second workers and the'tangential point of the first worker and the transfer-roll in our machine is so small as compared with the length of the staple of the stock that it is drawn between these two points and thereby straightened and also forced and pulled well into the teeth of the first worker. The combined stock 0 r is carried back and again carded between first worker G and main cylinder B and, together with stock n, is stripped from the first worker G and returned to the main cylinder, where the whole process is repeated.

Another advantage of our device is that the transfer-roll need not be removed when it becomes necessary to remove the workers for stripping and cleaning.

IVhat we claim as our invention, and desire to cover by Letters Patent, is

1. In a carding-machine, a main cylinder combined with a plurality of sets ofrolls cooperating therewith, each set including two workers which engage each other and each of which engages the main cylinder, a transferroll between said workers and the main cylinder for transferring stock from the second to the first worker, and a stripper for taking stock from the first worker and replacing it upon the main cylinder.

2. In a carding-machine, a main cylinder combined with a plurality of sets of rolls cooperating therewith, each set including two workers which are in carding proximity with each other and each of which is in carding proximity with the main cylinder, a transferroll located between the workers and the main cylinder to prevent surplus stock from accumulating and adapted to strip the second worker and force the stock Well into the teeth of the first worker, and a stripper for taking stock from the first worker and replacing it upon the main cylinder.

In testimony whereof we have afiixed our signatures in presence of two witnesses.

ROBERT B. ROBINSON. EDDO V. BATES. itnesses:

FISHER H. PEARSON, R. IV. STIOKNEY. 

